Home › Forum › Ask A Member › 1954 evinrude 7 1/2 hp question › Re: 1954 evinrude 7 1/2 hp question
You have a lot of questions here.
1. The gearcase can only be taken down by removing the powerhead. From there you unscrew a nut which is connected to the shift lever and that frees up the gearcase. Don’t try to force it out, you’ll break something up near the powerhead.
2. Hard to turn over – spray some fogging oil or put some 2-stroke oil into the cylinders. It could be bone dry in there, or if the motor is really cold (like 10 degrees), you won’t be able to get that thing to turn over.
3. If the magneto is barely turning, remove the stator plate and clean any old grease off the armature plate. Relube the ring and it should move freely. Pretty common issue with an old motor (or even new ones too if left sitting and dried out).
4. Coils are coils. If you don’t get spark on one side it could be connections, dirty points (or dead points), condenser, or just a bad coil. Also could be a leaking wire (worn insulation) or faulty spark plug boot.
Anyone who knows me, knows that I hate the 5.5/7.5’s, not because they are bad motors, but because it’s a big hassle removing the powerhead to change an impeller or identify a cooling system issue. And as soon as you start disturbing things, then you get into 10 other headaches…broken wires, no-good gaskets, broken screws…the hell with that!!!! I sold 9 of them in the last 3 months and will never buy another again!